Thread-waxing device.



A.EPPLBR. THREAD WAXING DEVICE.

APPLICATION FILED AUG. 19, 1912.

Patented Mar. 24, 191 i 2 SHEETS-SHEET l.

A. EPPLER. THREAD WAXING DEVICE.

APPLICATION FILED AUG. 19,1912.

Patented Mar. 24, 19%

2 SKEETS SHEET 2.

UNITED STATES PATENT OFFICE.

ANDREW EPPLER, OF LYNN, MASSACHUSETTS, ASSIGNOR T0 UNITED SHOE MA-CHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

THREAD-WAXING DEVICE.

Specification of Letters Patent.

Application filed August 19, 1912. Serial No. 715,799.

To all tohom it may concern:

Be 1t known that 1, ANDREW EPPLER, a

citizen of the United States, residing at scription of the invention,such as will en-' able others skilled in the art to which it appertainsto make and use the same.

The present invention relates to Wax thread shoe sewing machines, andmore particularly to thread waxing devices for such machines.

The invention is designed primarily as an improvement in thread waxingdevices of the type which comprise a receptacle .for the wax, a heatingdevice extending into the receptacle and surrounded b the wax containedtherein, and devices or guiding the thread,into and out of thereceptacle.

In thread waxing devices of this character it frequently happens thatthe heat transmitted by the heating device is not sufficient to melt thewax thoroughly at the point where the thread passes through thereceptacle, and that the wax therefore does not permeate the thread, butthe thread receives merely a surface coating of wax inthe waxing device.Also the heat of the heating de vice is often not suflicient to melt thewax throughout the receptacle, so that a layer of hardened wax formsabout the inner walls of the receptacle, and the wax used up by thethread is not replenished in a sat1sfactory manner by the supply of waxin the receptacle.

The primary object of the invention is to produce a thread waxing deviceof the character referred to, with an improved heating device which willinsure thereduction of the wax to the r0 er consistency to permeate thethread where the thread passes through the receptacle, and the meltin ofthe wax throughout the receptacle. 1th this object in view the inventioncontemplates the provision in 'a thread waxing device havin ,a waxreceptacle of a heating device exten ing into the receptacle anrhintothe wax contained therein, and provided with anenlargement extendm overand 10- rated adjacent to the base of t e receptacle. By this provisionthe heat transmlttin surface of the heating device is increase and thewax atthe base of the receptacle and.

above the enlargement is melted and flows in toward the heating deviceby which it is Patented Mar. 24., 1914.

ned in a thoroughly melted condi tion. Considerable heat is transmittedto the base ofthe receptacle and thereby con- 3 ducted to the side wallsof the receptacle and prevents the formation of .a layer 0 hardened Waxabout the inner wall of the receptacle. The enlargement in the heatingdevice is preferably constructed so that it'-'=- extends oversubstantially the entire area of.

the base ofthe receptacle.

In the accompanying drawings illust-rating the invention in the bestform at present known to the inventor, Figure l is a plan view of thethread waxin device; Fig. 2 is a front elevation of the t read waxingdevice with a portion of the receptacle broken away to show the interiorof the receptacle;

Fig. & is a section taken on the line 3-3 of Fig. 2; Fig. 4 is aside-elevation of the device; Fig. 5 is an enlarged detail plan ofaportion of the waxing device as illustrated in Fig. 1; Fig. 6 is asection taken on the line 6-6 of Fig. ,5; and Fig. -7 taken on the line77 of Fig. 5.

u 1s a section I The thread waxing device comprises a bracket 1 securedin any suitable manner to the frame of the sewing machine to'which thewaxing device is applied; said bracket being constructed to form a coverfor the wax receptacle, as indicated at 2. The max receptacle 3 isadjustably secured to the bracket 1 so that it may be raised and loweredwith relation to the bracket. To this end a downwardly extending rod 4is secured to the bracket 1, and the receptacle 3 is provided with asplit clamp 5 for clamping the receptacle in position on the rod. Theclamp is provided with an actuating bolt 6 having an enlarged head whichmay be mani ulated by the operator to clamp the receptace on the rod andto unclamp the receptacle when it is desired to lower it on the rod. Acollar or washer 7 is attached to the lower end of the rod 4, and-servesas.v

a stop to prevent the receptacle from slipping ofltthe rod when ,it islowered.

In order to heat the wax in the receptacle a heating device is arrangedso that it extends down into the receptacle and into the wax containedin the receptacle. This heating device is provided with an enlargementextending over and located adjacent the base.

a 30 ing device, and by arranging t of the receptacle, and devices forguiding the thread are preferably mounted so that the thread is guidedthrough the receptacle in proximity to the heating device.

In the illustrated embodiment of the invention the heating device isconstructed to contain a heating fluid, preferably steam or hot water.

In the construction illustrated the heating device comprises pipes 8 and9 connected by a plate 10 attached to the lower ends of the pipes andprovided with a chamber or passage connecting-the pipes. The pipes 8 and9 are clamped to the bracket 1 in a position. such that the plate 10 islocated near the base of the receptacle. The plate 10 forms anenlargement of the heating device, and is preferably constructed so thatit overlies substantially the entire base of the reeeptacle.

In order to clamp the pipes 8 and 9 to the bracket 1, the bracket isprovided with recessesl to receive the pipes, as illustrated in Fig. 1',and the pipes are clamped against the bracket by means of a clampingplate 12 actuated by a clamping bolt 13. By this construction theheating device may be clamped in any desired position with relation tothe receptacle and the plate 10 may be located at different distancesfrom the base ofthe receptacle as desired.

The pipes 8 and 9 are connected with entrance and return pipes 14 and 15for the heating fluid by means of nipples 16 threaded into the tubes 8and 9 and interiorly threaded to receive the pipes 1a and 15. An angularplate 17 is secured to the side of the receptacle thereby forming achamber for the reception of lumps of wax which are 40 placed therein.to supply the receptacle, said plate being formed with a series of slots18 through which the wax may flow when melted into the body of thereceptacle. A

th'read truck 19 for guiding the thread through the receptacle iscarried by a sup porting frame 20 which is clamped to the pipes 8 and 9.r

The pipes 8 and 9, and the connecting plate 10, form a substa'ntiallyU-sha "d heatthread truck 19 as described,ll:he threadis guided throughth receptacle in proximity to the heating device. The plate 10 furnishesa large heating surface, and the heat from said .5 plate rises throughand ra ses the temperature'of the wax througl'ro t ejzlostantially theentire receptacle. Heat i tr: emitted by the plate 10 tothe base of threceptacle, and thcruhv conducted to the walls thereof,"preventh inner.walls' of the receptacle. The wax above the plate and along the wallsof the receptacle is mcltedandfiows in toward the center of thereceptacle where the heating i1 device extends into therecepta'cle andwhere in construction as the stripping device illusin the receptacle andcomprising a heat con- ,j-the hardening ofthe \vax along the.

the thread passes therethrough. The wax at the center of the receptacleand in proximity to the thread is readily reduced,to, and maintainedatt-he proper consistency by the heat transmitted by the heating device,and particularly by the pipes 8 and 9 thereof. By the provision foradjustment of the plate 10 with relation to the base of the receptacle,the heat transmitted to the base of the receptacle by said plate may bevaried as desired.

The stripping device for stripping the wax from the thread as the threademerges from the receptacle is substantially-the same trated in thepatent to Ashworth, No. 1,015,- 7 72, dated January 30, 1912. Thisstripping device comprises a compressible block 21 which is perforatedto provide a passage for the thread, and which strips the wax from thethread as it passes therethrough. The block is compressed by acompressor 22 which is seated in a cap 23 threaded upon the upper end ofa socket 24 mounted on the cover of the wax receptacle. To permit theready removal of the block, a split sleeve 25 is provided" to receivethe block, and the sleeve is fitted into the socket 24. The socket isprovided with a dovetailed rib 26. which is received in a dovetailedrecess in the cover of the wax pot, and the socket is held in the recessby means of a retaining screw 27.

Having explained the nature and object of the invention, and havingspecifically described the preferred embodiment thereof, what is claimedis 1. A thread waxing device, having, in combination, a wax receptacle,a heating device having a body extending into the wax ducting plateextending outwardly from the body of the heating device over andarranged adjacent the base of the receptacle, and means to guide thethread into and out ofthe receptacle above the plate.

2. A thread waxing device, having, in combination, a wax receptacle, aheating device extending centrally into the receptacle and into the waxin the receptacle and comprising a heat conducting plate arrangedadjacent and extending outwardly toward .th side walls of the receptacleover the base of the receptacle, and means to guide thev thread into andout of the receptacle 3. A thread waxing device, having, in combination,a Wax receptacle, a heating device extending downwardly into wax in thereceptacle and comprisin a heat conducting plate extending overanarranged near the 25 base of the receptacle, and means for guid 'ingthe'thread into and out of the receptacle in proximity to the heatingdevice and above the plate.-

4.. A thread waxing device. having. in no combination, a Wax receptacle,a substantially U-shaped heating device for containing the heating fluidextending within the receptacle and comprising entrance and return pipesfor the heating fluid, a-member extending over and arranged adjacent thebase of the receptacle and provided with a passage connecting saidpipes, and means to conduct the thread into and out of the receptacle inproximity to the heating device.

5. A thread waxing device, having, in combination, a Wax receptacle, asubstantially U-shaped heating device extending centrally into thereceptacle and partially immersed in the-wax contained in the recepmoleand comprising a heat conducting plate extending outwardly from the bodyof the receptacle.

the heating device over and arranged adjacent the base of thereceptacle, and means'to conduct the thread into and out of the receptacle in proximity to the heating device.

6. A thread waxing device, having, in combination, a wax receptacle, aheating de vice extending into the wax in the receptacle andprovided-With an enlargement extending 7 over and arranged adjacent thebase of thev receptacle, pI'OVlSlOIl for adjusting the heating device tolocate the enlargement at different distances from the base of thereceptacle, and means to guide the thread through ANDREW EPPLER. Y

Witnesses:

CHAUNCEY M. SINCERBEAUX, BURTON W. CARY.

